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Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 647 babies born in New York. The mean weight was 3360 grams with a standard deviation of 878 grams. Assume that birth weight data are approximately bell-shaped. Estimate the number of newborns who weighed between 1604 grams and 5116 grams. Round to the nearest whole number. The number of newborns who weighed between 1604 grams and $116 grams is X